Polars vs Pandas, PyO3 vs Cython: Rust Is Rewriting Python's Fast Path

If you list the tools that made Python feel fast lately, a pattern jumps out. The dataframe library everyone is switching to, Polars , is written in Rust. The linter that replaced flake8, Ruff , is Rust. The packaging tool eating pip and virtualenv, uv , is Rust. Pydantic v2 rewrote its core in Rust; Hugging Face&rsquo;s tokenizers is Rust; orjson is Rust; even cryptography moved its guts to Rust…